Machine for making egg case flats



Nov. 12, 1929.

s. SMITH MACHINE FOR MAKINGEGG CASE FLA' IS Filed June 1927 5Sheets-Sheet 1 l v E Swan S/m i/z Nov. 12, i929. I 9. mm 1,735,340

' CHINE FOR MAKING EGG CA SE FLATS Filed June 8. 1927 s Sheets'$heet 2Nov. 12, 1929. 5. SMITH IACHINE FOR MAKING EGG CASE FLATS Filed June 8,1927 5 Sheets-Sheet 3 VEL 1:1 I

Swan

Nov. 12, 1929. 5. SMITH 1,735,340

MACHINE FOR MAKING EGG CASE FLATS Filed June 8. 1927 5 Sheets-Sheet 4Nov. 12, 1.929. 5. SMITH 1 1,735,340

MACHINE FOR MAKING EGG CASE FLATS Filed June 1927 5 Sheets-Sheet 5 SwanShall Patented Nov. 12, 1929 I 2 a, ,V ,g I i UNITED STATES PATENTOFFICE swan SMITH, on ST. PAUL'MINNESOTA acrame FOR MAKING nee onsnFLATS Application filed June 8, 1927. Serial No.'197,275.

This invention relates to a machine for principles of my invention. Inthe side making egg case flats and more particularly members of theframe 1 there are journalled for making flats of the corrugated type anumber of rolls, including a rigid corformed of a single sheet ofrelatively heavy rugating roll 2 and an adjustably mounted I v 5 fibreboard. corrugating roll 3, adapted to bear against 55 It is an object ofthisinvention to provide andmesl'iwiththe corrugating roll 2. The staamachine for making corrugated egg case tionary corrngating roll 2 isprovided with a flats having grooves or flattened areas, transshaft at(Fig. 5) extending through the heads verse of the corrugations, forreceiving the 5 of said roll to provide reduced journals 6,

lower edges of the transverse partitions of adapted to be rotatablymounted in bearings 60 the egg case fillers. 7. Said bearings 7. arepreferably of the It is a further object of this invention towater-cooledtype and provided with water provice a machine for makingegg case flats inlet and outlet pipes 8. Said hearings 7 are in acontinuous operation, with for supported directly from the side membersof 15 corrugating sheet material, crushing, and the frame 1. At the rearside of the machine, 5 cutting the same into sizes suitable for egg thejournal 6 is further extended to provide case flats. a reduced end 9 onwhich is splined a gear 10.

' t is a further object of this invention to l llhe fcorrugating roll 2comprises a cylinprovidein combination with the corrugating drical shell11, bolted or otherwise secured to means for forming grooves transverseto the gitudinally corrugated surface 12. In addicorrugations and forstripping the corrution to the longitudinal corrugations of the gatedmaterial from the corrugating rolls. surface 12, there are also formedtransverse Other and further imprtant objects of this pe "ipheralgrooves 13, ,(Fig. 5), suitably invention will be apparent from thefollowspaced for a purpose that will later appear. 75 ing description ofan illustrated embodiment Electrical means are provided for heating ofmy invention. the roll-2 comprising helically mounted re- ()f thedrawings: I SlStiIIlCG. wires 14 carried upon a frame 15 Figure 1 is aside elevational view of a mawithin said hollow roll 2 and connected bym chine embodying the principles of this inwires 16 and 17 leadingthrough suitable in- .80 vcntion and showing the driving mechanism.sulation 18 in one of the heads 5 to spaced Figure 2 is a broken topplan view of the contact rings 19 and 20. Said contact rings same. i -19and 20'are mounted upon the hub 21 of Figure 3 s sectional view takensubstansaid head 5 and insulated therefrom by intially on line IIIIII ofFigure 2, with parts sulation 22. Contact brushes 23 and 24, con- 85omitted. w nected with outside terminals 25 and 26, form Figure 4 is aside elevational View; the necessary resilient contact with the ringsFigure 5 is an enlarged broken sectional 19 and 20 to permit an electriccurrent to be view taken substantially on line V-V of conducted throughthe resistance coils 14 so Figure 3. from a suitable outside source ofelectricity 90 Figure 6 is an enlarged fragmentary secwhen connected tosaid terminals 25 and 26. tional view taken substantially on line Saidterminals 25 and 26 are suitably sup- VI-VI of Figure 2 with partsomitted. ported in an insulating block 27, extending Figure 7 is anenlarged broken sectional through the front side wall of the frame 1.view taken on line VII-VII of Figure 3, I The corrugating roll 3 isconstructed very 95 with parts in elevation. similarly to the roll 2 andcomprises a cylin- As shown on the drawings: 2 I drical shell 28 boltedto heads 29. Said heads The reference numeral 1 indicates as a 29 areprovided with hubs 30 through which whole the frame of a machinefo'rmaking extends a shaft 31. The reduced portions corrugated egg caseflats, embodying the '32 of said shaft 31 are journaled in water 100rolls of a machine for making egg case flats, the heads Band providedwithan outerlonrugating roll 2. are so spaced as to provide longitudinalgrooves in the finished corrugated egg case flats, properly spaced toreceive the lower edges of theegg case filler sections. Crushing cooledbearings 33 adjustably positioned within square or rectangular openings34L formed in the side walls of the frame 1. The bearings 33 arepreferably also square or rectangular in shape and are adapted to slidebetween guides 35 (Fig. a), formed in said side walls. Said bearings 33normally rest against bolts 36, by means of which the bearings and roll3 are adjustable relative to the roll 2. Helical springs 37 arepositioned on the opposite side of the bearings to the bolts 36 betweensaid bearings and the ends of the guiding frames 35. Said helicalsprings 37 offer a certain amount of resiliency which tends to keep thecorrugating rolls 2 and 3 separated against the pressure of theadjusting bolts 36.

The roll 3 is also provided with electrical resistance coils 38 mountedupon a frame 39 within said roll and connected through contact rings 40and 41, contact brushes 12 and 13, and wires 44 and '15, to the terminalposts 25 and 26. I A gear 47 is mounted upon. the extended reduced end48 of the journal 31 in meshing relation with the gear 10. The

roll 3 is provided with similar corrugations '49 to the corrugations ofthe roll 2 and there are also formed peripheral grooves 50 in alignmentwith the peripheral grooves 13 of the roll 2.

A pressure roll 51 (Figures 1 to a inelusive), is mounted directly abovethe corru gating roll 2. Said roll 51 is provided with a shaft 52 journaled in bearings 53 formed in the side walls of the frame 1. Theshaft 52 is provided with .an extended rear end on 'Wl11Cl1 is mounted agear 54 meshing with the gear 10, and asprocket gear 55 over which istrained a chain 56. Said roll 51 is also provided wlthtransverseperipheral grooves 57 in alignment wlththe grooves 13 and 50.

In certain of said transverse peripheral 'groovesare adapted to betrained endless solid chalns or. Said chains 57 (Fig. 6), pass-aroundthe rolls 3 and 51 and lie against substantially half of theperiphery of the corrugating roll 2. Loose rings 58 are mounted in theother peripheral grooves 50 of the corare formed in the paper. Thelongitudinal corrugations 61 are formed by the chains 57 and rings 58pressing the paper into the corresponding peripheral grooves 13 of thecor- The peripheral grooves of the web to form the longitudinal groovesin the corrugated flats also serves to strengthen the flats and givethem added rigidity.

The paper to be corrugated and to be made lllLO flats is mounted in theform of a reel 62 upon a supporting stand 63 (Figures 1 to 4.- clusive).The end of the paper web 59 is en led beneath guiding rollers 6% througha trough 65 containing a moistening fluid 66. The web 59 then passesupwardly between 6 6 rriven feed rolls 67 and 68. Said feed rolls 7 and68 are journaled in the side walls of ie frame 1 and carry on the rearends of weir respective shafts 69 and 7 O, intermeshing gears 71 and 72respectively.

The gear 72 is driven from a gear 73 mounted upon a main drive shaft'Z-l carrying a driving pulley 7 5. A second gear 76, also mounted uponthe shaft 74, meshes with the gear 1 7 mounted upon the extended journalof the corrugating roll 3. The gear 73 also drives a gear 77 which inturn drives a second gear '78. Said gears 77 and 78 are mountetrespectively on the shafts 79 and 86 carrying slitters 81 and 82.

The web of paper 59 passes from the feed rolls 6? and 68 through theslitters 81 and 82, (Fig. 7), wher the web is slit longitudinally intothe proper width for egg case flats. The web passes next to thecorrugating rolls 2 and 3, where the transverse and longitudinalcorrugations and grooves are impressed into the web and at the same timethe web is dried to permanently set the corrugations. For this purpose,the corrugating rolls 2 and 3 are preferably heated to a relatively hightemperature by means of the electrical heat ing means already described.

It should be noted that the chains 57 not only serve to impresslongitudinal grooves into the corrugated web, but also serve to hold theweb against the surface of the corrugating roll 2 until the webhaspassed from between said corrugating roll 2 and the upper pressureroll 51. Said chains 57 also function as stripping means to prevent thecorrugated web from following on around the corrugating roll 3. Theloose rings 58 merely serve to impress the longitudinal grooves in theweb. The upper pressure roll 51 is adapted to bear against thecorrugated web 59 and slightly crush the same to make the corrugated wcbmore resilient and pliable.

The corrugated web after leaving the corrugating roll 2, travels over atable 83, (Fi 3), extending between the side walls of the frame 1. Saidtable 83 is provided with a longitudinal slot 8 1 in which ismounted asmall idle roll 85. A printing roll 86 is mounted directly above theroll 35 and is adapted to bear against the paper web as it passes oversaid roll 85. Said printing roll 86 is provided with raised printingsurfaces 37, aligned with the peripheral grooves 5? of the roll 51, andadapted to extendintothe longitudinal grooves 61 of the corrugated Web.Said printing roll 86 is fed from a series of smaller inking rollsincluding a roll 88. The printing roll. 86 is driven by means of thechain 56, which is trained around a sprocket gear 89 mounted upon therear end 90 of its shaft.

The corrugated Web passes from the printing roll 86 to a rotary cuttermechanism 91, (Fig. 3) Said cutter mechanism 91 is mounted upon an arm92 from the frame 1, and is driven by means of a chain 93 trained arounda sprocket gear 94 on the shaft 90 and a sprocket gear 95 on the cuttershaft 96. The rotary cutter 91 includes a pair of curved knives 97supported upon radial arms 98, and adapted to rotate into closeproximity to a bed knife 103, set in the frame 1. As the rotary cutter91 is revolved, the blades 97 sever the Web 59, the severed Web droppingupon a traveling apron 99. Said apron 99 is trained over spaced rollers100, mounted upon bracket 101 from the frame 1.

Obviously, by adjusting the speed of the rotary cutter 91, the Web 59may be severed into the correct lengths for egg case flats. These flatsare delivered by the traveling apron conveyor 99, onto a table 102,Where the flats are piled in suitable stacks. I

I am aware that many changes may be made and numerous details ofconstruction may be varied through a Wide range Without departing fromthe principles of this invention and I, therefore, do not purposelimiting the patent granted hereon otherwise than necessitated by theprior art.

I claim as my invention:

1. In a machine for making egg case flats, a roll having a corrugatedsurface and transverse peripheral grooves therein in spaced parallelplanes, a second roll having a similar surface adapted to press againstsaid first roll to form transverse corrugations in a Web of paper fedbetween said rolls, and means separate from said rolls adapted toproject into the peripheral grooves of said first roll to formlongitudinal grooves in said paper web.

2. In a machine of the class described, a roll having a corrugatedsurface and transverse peripheral grooves therein in spaced parallelplanes, a second roll having a similar surface adapted to press againstsaid first roll, endless bands of flexible material adapted to travel insaid peripheral grooves, and means for feeding fibrous Web materialthrough said rolls for the purpose of forming corrugated egg case flats,said flexible bands forming longitudinal grooves in said flats.

3. In a machine of the class described, a heated roll having acorrugated surface and transverse peripheral grooves therein in spacedparallel planes, a second heated roll having a similar surface adaptedtopress againsts'aidfirst roll and endless bands of flexible materialadapted to travel in said peripheral grooves and to project beyond thecorrugations of the respective rolls. 4;. In a machine of theclassde'scribed, a roll having a corrugated surfaceand transverseperipheral grooves therein in spaced parallel planes, a secondrollhaving a similar surface adapted to press against said first rolland endless bands of flexible material adapted to travel in saidperipheral grooves, said bands being substantially twice as thick as thedepth of the grooves. I

5. In a machine for making egg case flats, a stand for supporting a reelof fibrou'smaterial, means for moistening said material, heatedcorrugated drums for corrugating and drying said material and flexibleendless strips passing between said drums to form spaced parallelgrooves in said material transverse to said corrugations. I

6. In a'machine for making egg case flats, a stand for supporting a reelof fibrous material, means for moistening said material, heatedcorrugated drums for corrugating and drying said material, flexibleendless strips passing between said drums to form spaced parallelgrooves in said material transverse to said corrugations, means forslitting said material, and automatic'means for cutting the same intosizes suitable for egg case flats.

7 In a machine for making egg case flats, a frame, a corrugated rollsta-tionarily supported in said frame, a second corrugated roll adjustably positioned in said frame for hearing against said stationaryroll, each of said rolls having aligned peripheral grooves lying intransverse planes to the axis of the rolls, and flexibleendless memberstrained around said adjustable rolls in said grooves for the purpose offorming longitudinal grooves in the egg case flats. p

8. In a machine for making egg case flats, a frame, a corrugated rollstationarily sup ported in said frame, a second corrugated rolladjustably positioned in said frame for bearing against said stationaryroll, each of said rolls having aligned peripheral grooves extending tothe trough of the corrugations lying in transverse planes to the axis ofthe rolls, and flexible endless members trained around saidadjustablerolls in said grooves for the purpose of forming longitudinalgrooves in the egg case flats.

9. In a machine of the class described, the combination With a pluralityof intermeshing corrugated rolls having peripheral grooves, of aplurality of endless bands trained around said rolls and running incertain of said grooves and loose rings mounted in other of saidperipheral grooves.

10. In a machine of the class described,'a pair of intermeshing rollshaving aligned peripheral grooves, and endless bands trained around oneof said corrugated rolls in the grooves thereof, and adapted to run inthe grooves of said other corrugated roll.

11; In a machine of the class described, a stationary corrugated roll, asecond adjustablecorrugated roll adapted to be pressed into meshingrelation therewith, each of said rolls having peripheral grooves, meansfor feeding sheet material to said rolls for corrugating the same, andendless stripping members trained in. said grooves oI said adjustableroll and adapted to press the sheet material into said grooves in saidstationary roll and to hold said material there-against.

12. In a machine of the class described, a stationary corrugated roll, asecond adjustable corrugated roll adapted to be pressed into meshingrelation therewith, resilient means tending to separate said rolls, eachof said rolls having peripheral grooves, means for feeding sheetmaterial tosaid rolls for corrugating the same and means positioned insaid grooves of said adjustable roll and adapted to press the sheetmaterial into said grooves in said stationary roll and to hold saidvmaterial thereagainst.

'18. The combination with a pair of intermeshing corrugated rolls havingalined peripheral grooves, of loose rings positioned Within the groovesof one of said corrugated rolls and adapted to project into thecorresponding grooves of said other roll.

14. In a machine of the class described, a pair of intermeshingcorrugating rolls, having alined peripheral grooves, means for feeding aWeb of paper therebetvveen for corrugating the same, a smooth surfacedroll having similar alined grooves adapted to press against one of saidcorrugating rolls. and flexible means traveling in said alined groovesfor forming longitudinal grooves in the Web of paper.

15. In a machine of the class described. a pair of'corrugating rolls forforming corru-- gations in a eb of paper and a smooth surfaced-rolladapted to partially crush the corrugations in said paper to render thesame more resilient;

In testimony whereof I havehereunto subs scribed myname at St. Paul,Ramsey County,

Minnesota.

SWAN SMITH.

